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Pure magnesium or magnesium alloy surface thermal diffusion zincizing alloying method

A magnesium alloy and thermal diffusion technology, which is applied in the direction of solid-state diffusion coating, metal material coating process, coating, etc., can solve the problems of lower mechanical properties of the matrix, growth of the matrix structure, and high heating temperature, and achieve low equipment requirements. The effect of uniform and dense infiltrated layer structure and bright surface

Active Publication Date: 2014-04-30
江苏龙泰合金科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for alloying pure magnesium or magnesium alloy surface by thermal diffusion zinc infiltration, which solves the problems of high heating temperature and long time in the existing alloying method, which lead to the growth of the matrix structure and the decrease of the mechanical properties of the matrix

Method used

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  • Pure magnesium or magnesium alloy surface thermal diffusion zincizing alloying method
  • Pure magnesium or magnesium alloy surface thermal diffusion zincizing alloying method
  • Pure magnesium or magnesium alloy surface thermal diffusion zincizing alloying method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Step 1, dry the pure zinc powder with a particle size of 25 μm to remove water vapor or other organic impurities in the zinc powder, and then put the pure zinc powder into the iron can;

[0028] Step 2, use 160#, 280#, 400#, 800#, 1200# metallographic sandpaper to grind or polish the pure magnesium workpiece in turn, remove the stains and plaques on the surface, make the surface smooth without obvious scratches, and then Wash in ultrasonic alcohol for 5 minutes to remove surface dirt, then wash in ultrasonic acetone for 5 minutes to remove surface organic matter, and finally wash with flowing deionized water and dry the workpiece with hot air;

[0029] Step 3, bury the pure magnesium workpiece after the surface treatment in step 2 in an iron can filled with pure zinc powder and shake it tightly to ensure that the workpiece is in close contact with the zinc powder;

[0030] Step 4, put the iron can together with the workpiece into the heating furnace for heating, the hea...

Embodiment 2

[0034] Step 1, drying the pure zinc powder with a particle size of 10 μm to remove water vapor or other organic impurities in the zinc powder, and then putting the pure zinc powder into the iron can;

[0035]Step 2, use 160#, 280#, 400#, 800#, 1200# metallographic sandpaper to grind or polish the magnesium alloy workpiece in turn, remove the stains and plaques on the surface, make the surface smooth without obvious scratches, and then Wash in ultrasonic alcohol for 3 minutes to remove surface dirt, then wash in ultrasonic acetone for 5 minutes to remove surface organic matter, and finally wash with flowing deionized water and dry the workpiece with hot air;

[0036] Step 3, embedding the magnesium alloy workpiece after the surface treatment in step 2 in an iron can filled with pure zinc powder and shaking it tightly to ensure that the workpiece is in close contact with the zinc powder;

[0037] Step 4, put the iron can together with the workpiece into the heating furnace for h...

Embodiment 3

[0039] Step 1, drying the pure zinc powder with a particle size of 100 μm to remove water vapor or other organic impurities in the zinc powder, and then putting the pure zinc powder into the iron can;

[0040] Step 2, use 160#, 280#, 400#, 800#, 1200# metallographic sandpaper to grind or polish the pure magnesium workpiece in turn, remove the stains and plaques on the surface, make the surface smooth without obvious scratches, and then Wash in ultrasonic alcohol for 8 minutes to remove surface dirt, then wash in ultrasonic acetone for 3 minutes to remove surface organic matter, and finally wash with flowing deionized water and dry the workpiece with hot air;

[0041] Step 3, bury the pure magnesium workpiece after the surface treatment in step 2 in an iron can filled with pure zinc powder and shake it tightly to ensure that the workpiece is in close contact with the zinc powder;

[0042] Step 4, put the iron can together with the workpiece into the heating furnace for heating,...

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Abstract

The invention discloses a pure magnesium or magnesium alloy surface thermal diffusion zincizing alloying method. A pure magnesium or magnesium alloy workpiece which is subjected to surface treatment is buried into an iron tank with pure zinc powder and is shaken to condense the zinc powder, and subsequently the iron tank is put into a heating furnace to be heated up. According to the pure magnesium or magnesium alloy surface thermal diffusion zincizing alloying method, as the pure magnesium or magnesium alloy workpiece which is subjected to surface treatment is buried into the iron tank with pure zinc powder and is shaken to condense the zinc powder, the workpiece is closely contacted with the zinc powder, the thermal diffusion zincizing on the surface of the pure magnesium or magnesium alloy workpiece is achieved under atmosphere, the situation that the operation is performed in vacuum or on the presence of inert gases is avoided, the diffusion time is shortened, the temperature is reduced, the phenomena that matrix tissue grows, the mechanics properties of a matrix are degraded and pitting or burning loss happens to the surface, are avoided, and moreover the method requires lowly on equipment, is easy to operate, low in cost and beneficial for application in industrial production.

Description

technical field [0001] The invention belongs to the technical field of magnesium or magnesium alloy surface corrosion and protection, and relates to a method for thermal diffusion and zinc alloying on the surface of pure magnesium or magnesium alloy. Background technique [0002] Magnesium and its alloys have good shock absorption performance, can withstand large shock and vibration loads, have excellent cutting and polishing performance, and are easy to cast. In addition, magnesium and its alloys have good electrical and thermal conductivity, and excellent shielding performance. In recent years, as people pay more attention to resources and environmental issues, magnesium and its alloys have become a very important modern industrial structural material used in the fields of automobiles, machinery, aerospace, communications, optical instruments and computers. However, magnesium is one of the active metals. The natural oxide film of magnesium and its alloys is not dense and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/36
Inventor 徐春杰张金皛田军陈利萍张忠明
Owner 江苏龙泰合金科技有限公司
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